505431402 has 32 divisors (see below), whose sum is σ = 1156848000. Its totient is φ = 144211968.

The previous prime is 505431397. The next prime is 505431413. The reversal of 505431402 is 204134505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24474 + ... + 40122.

It is an arithmetic number, because the mean of its divisors is an integer number (36151500).

Almost surely, 2^505431402 is an apocalyptic number.

505431402 is an abundant number, since it is smaller than the sum of its proper divisors (651416598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505431402 is a wasteful number, since it uses less digits than its factorization.

505431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16430.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 505431402 is about 22481.8015737174. The cubic root of 505431402 is about 796.5641197427.

Adding to 505431402 its reverse (204134505), we get a palindrome (709565907).

The spelling of 505431402 in words is "five hundred five million, four hundred thirty-one thousand, four hundred two".